Typo, misspelled.

Author: vssr

README.md

@@ -1,7 +1,7 @@
 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/mediact/composer-file-installer/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/mediact/composer-file-installer/?branch=master)
 
 # composer-file-installer
-Install files in a project as part of a `composer install` or `composer update`. Uses the [mediact/file-mapping](https://github.com/mediact/file-mapping) package for moving files according to a source -> destination mapping. The Composer `IOInterface` supplies the file installer with the capabiliy to write the files and supply end-users with output messages.
+Install files in a project as part of a `composer install` or `composer update`. Uses the [mediact/file-mapping](https://github.com/mediact/file-mapping) package for moving files according to a source -> destination mapping. The Composer `IOInterface` supplies the file installer with the capability to write the files and supply end-users with output messages.
 
 ## Usage example
 ```php